Hello,Thank's for looking,in our shared house we have vaillant boiler(pls chk My images )quite old ,couldn't find the model number.
We like to turn off the central heating water flow pipe off,but don't know which one is that,could any one pls have look at the picture and tell us,which valve we have to turn off so that heating won't turn on even the main heating switch in the front panel is on.
The big round cap with Red colour- thermostat ,i couldn't turn to low,its not rotating at all!!!
Thank's
We like to turn off the central heating water flow pipe off,but don't know which one is that,could any one pls have look at the picture and tell us,which valve we have to turn off so that heating won't turn on even the main heating switch in the front panel is on.
The big round cap with Red colour- thermostat ,i couldn't turn to low,its not rotating at all!!!
Thank's